> that press release could make a big difference -- to the SEC and other federal regulators, for example.

They might even have already done this confidentially via the SEC Whistleblower Protection route. We don't yet know who filed this:

https://news.ycombinator.com/item?id=38469149

I guess this might have seemed like their best option if a public statement would be a breach of NDA's. That said, I still wish they'd just have some backbone and issue a public statement, NDA's be damned, because the question of upholding a fiduciary duty to be beneficial to all of humanity is super important, and the penalties for a violation of an NDA would be a slap on the wrist compared to the boost in reputation they would have gotten for being seen to publicly stick to their principles.